Nortel Circuit Card Installation Manual page 875

Table 274
Connector J2 pin assignments (Part 1 of 2)
Pin
Number Port
1
2
3
4
5 2
6
7
8
20
9
10
11
12 3
13
25
24
23
14
15
16
17 4
18
QPC841 Quad Serial Data Interface card
Signal Purpose in DTE mode
FGD Frame ground
TD Transmitted data
RD Received data
RTS Request to send (not used)
CTS Clear to send (Note 1)
DSR Data set ready (Note 1)
GND Ground
CD Carrier detect (Note 1)
DTR Data terminal ready
TD Transmitted data
RD Received data
RTS Request to send (not used)
CTS Clear to send (Note 1)
DSR Data set ready (Note 1)
GND Ground
CD Carrier detect (Note 1)
DTR Data terminal ready
TD Transmitted data
RD Received data
RTS Request to send (not used)
CTS Clear to send (Note 1)
DSR Data set ready (Note 1)
Purpose in DCE mode
Frame ground
Transmitted data
Received data
Request to send (Note 2)
Clear to send
Data set ready
Ground
Carrier detect (not Used)
Data terminal ready (Note 2))
Transmitted data
Received data
Request to send (Note 2))
Clear to send
Data set ready
Ground
Carrier detect (not used)
Data terminal ready (Note 2))
Transmitted data
Received data
Request to send (Note 2))
Clear to send
Data set ready
Circuit Card Description and Installation
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